Water is a very important material for life, human being used for the purposes of living, agriculture, industry, recreation and the environment. Lack of water is a major issue for the world today and people pollute the water sources available. Water is a valuable resource, but not infinite, thus saving water is always essential, even in areas where water is abundant. we need to take measures to improve water sources contaminated. construction of water treatment plants, to raise awareness of people about water protection, water ....... is an important component in the lives of people so we need to protect and save water.
đang được dịch, vui lòng đợi..
